Fluid-actuated engine



June 18, 1929. Q B, WESTON 1,717,591

FLUID A'CIUATED ENGINE Filed April 24, 1926 5 Sheets-Sheet 1 92 I CKWW4. m

IN V EN TOR.

BY Wjz z MA A TTORNEYS.

June 18, 1929. c. B. WESTON FLUID ACTUATED ENGINE Filed April 24. 1926 3Sheets-Qheet 2 Q y W 6 7% IN V EN TOR.

A TTORNEYS.

3 Sheets-Sheet 3 INVENTOR.

0 07 .UHM'E DH O Q/ m J A L M r M A TTORNEYS.

June 1929. c. B. WESTON FLUID ACTUATBD ENGINE Filed April 24, 1926cLARENcn B. WESTON. or, ER E, rENNsYLvlmrA,nssreivon, LBWYMEsnEEAssIen-QI PATEN MENTS, TO BUTC YRUS- ERIE COMPANY, OF SOUTH.MILWAUKEE,WISCONSI1\T, A/ICOR- PORA'I'IQN or DELAWARE.

Application filed April '24,

This invention is 1 designed to control fluid-actuated engines'so as topositively"reverse them in a simple-manner. In the preferred form thereversal is accomplished simultaneously with the operation of thethrottle, thus adapting the device to such engines as are used forexcavating machines and similar "deviceswhere the reversal factors areof great importance.- Tlie'controlling mechanism is preferably mountedon the engine shaft and in the present invention is housed in acylindrical carrier which has some fly wheelaction, the carrier properlyhousing the mechanism. In carrying out the invention a doublefluid-actuated control is provided so that the eccentric is positivelypositioned in both directions through the pressure oi the fluid-actuatedmeans. Details and features of the invention will appear from thespecification and claims.

The invention is illustrated in the accompanying drawings as follows:

Fig. 1 shows a plan View.

Fig. 2 a side elevation, partly in section.

Fig. 3 a sectional View throughthe devices I on the line 3-3 in Fig.4showing the fluid actuated controlling means' Fig. 4 a section on theline 44in Fig. Fig. 5 a sectional view of the throttle and" controllingvalve, the; throttle being closed and the valve setting the engine'to aforward direction of movement.

Fig. 6 a similar view with the throttle. valve slightly opened and thecontrolling valve in a position for a forward movementof the engine.

Fig. 7 a section on the line 7-7 in Fig. 4. Fig. 8 a diagram showing therelative crank and eccentric positions for Fig. 3.

Fig. 9 a sectional view of the controlling mechanism on the line 99 inFig. 10, the mechanism being set to drive the engine 7 in a reversedirection.

Fig. 10 a section'on the line 1010 in Fi 1 I 1 Fig. 11 a sectionalviewof the throttle and controllingvalve inposition to throw the controllingmechanism tothe position of Fig.9.

Fig. 12 a sectional view of the throttle and control valve, in positionfor reverse movement as indicated in'Fig. 9, the throttlevalvebeingslightlyopon.

I FLUID-nominate]: ENGINE crank and eccentric positions of Fig.9.

on the line1l 14 in 192a. "SeriaIINo;164390.;

F ig. 13 a diagram indicating the relative Fig. 14 is a section Fig.11."

1 marks the frame oifjthe"engine,f2. the Cyl111ClGIS,' 3 the valve h t 4t e crank shaft, l the cranks/l bearingsfor the crank shaft. 5'connecting rods; 6 cro s h ad 7" cross head guides, 8 piston rods, 9pistons... 10 steam port's leading' from'thecylinder to the engine valvechamber l l, 12"steampas-TJ sages leading from the" chamber 11 through aport 13 to the throttle valve chamber 145 15 exhaust portsleadingfromythe valve chamber 11, 16 the end elementsfof the en ginevalve 16, said'elementsjoperating]across the ports 10 and 15," 17 thecenterelement.

of the valve operating over the ports. or passages '12. This isthe'ordinary cylin-" drical engine valve construction cutting off thefluid on the inner'end of the endelenient" valves 16. The rod 18 isconnected with rocket 20-;formed on a sleeve 21'. The'sleevo 21 is carred in a bearing QQand'is provided with a rocker 28. Th'e'rocker 23 isconnected by' an eccentric rod 24 with an eccentric 27 carried by ashaft 28. The shaft 28' e'x-" I so strap 25 and the eccentricstrapis'mounted on an eccentric26. The rod 191mg a rocker tends through thesleeve 21'and has a rocker,

29 at its outer end. The rocker 29 is cone nected by a link 30 with abell crank lever'ff 31. "The bell crank lever 31 is'mounted on. a pin 32and is connected by a link33 with 1 Thus itwill be seen that the link38' is quar ter-ing to the rod 24 211116. asthecranks are setquartering: the valve movement for each engine istimed properly with thequ'arterp ing cranks and that the throwing ofhthe eccentric for one ofthe engines throws the" 1 eccentrlc for the other'of'the engin a d.

that varying the eccentric with relationjto i the crank shaft similarly"varies the throw for bothcylinders. 1 i A throttle valve34 is of a'sliding type'op-Y crating in a valve face 3? in thechamber 14. It hasports 35 and86 extending through f u it and eachot' theseportsisa'daptedpto be brought into register with the port 13 lead a cylinder ateach end of the rock lever, pistons in each cylinder, and connectionsbetween the pistons and the rock lever.

3. In a fluid actuated engine, the combination with the valve operatingparts comprising a cylinder, a piston, engine valve, crank and crankshaft, connections between the crank and piston, an eccentric, andconnections between the eccentric and engine valve, of a fluid actuatedmechanism mounted on the shaft controlling the position of the eccentriccomprising a rock lever swinging the eccentric to reverse the same; anda piston and cylinder moans operating the rock lever through fluidpressure in both directions, and devices comprising ways in the engineshaft conveying pressure fluid to the means.

4:. I11 a fluid actuated engine, the combination with the valveoperating parts comprising a cylinder, a piston, engine valve, crank andcrank shaft, connections between the crank and piston, an eccentric, andcon nections between the eccentric and engine valve, of a fluid actuatedmechanism mounted on the shaft controlling the position of the eccentriccomprising fluid pressure means throwing the eccentric under fluidpressure in. both directions and holding the same under fluid pressurein forward and reverse positions during the power effort of the engine,said meanscomprising a rock lever, a cylinder at each end of the rocklever, pistons in each cylinder, and connections between the pistons andthe rock lever; and devices comprising ways in the shaft conveyingpressure fluid to said cylinders.

5. In a fluid actuated engine, the combination with a cylinder, :1piston, an engine valve, a crank, a shaft driven by the crank,connections between the crank and piston, an eccentric mounted on theshaft, and connections between the eccentric and engine valve, of afluid actuated mechanism controlling the position of the eccentriccomprising fluid pressure means throwing the eccentric under fluidpressure in both directions; two control conduits leading to thepressure means; a valve mechanism con trolling the conduits; and athrottle valve actuated with the valve mechanism opening the throttleafter the opening of the valve mechanism in both directions.

6. In a fluid actuated engine, the combination with a cylinder, apiston, an engine valve, a crank, a shaft driven by the crank,connections between the crank and piston, an eccentric mounted on theshaft, and connections between the eccentric and engine valve, of afluid actuated mechanism controlling the position of the eccentriccomprising fluid pressure means throwing the eccentric under fluidpressure in both directions; two control conduits leadingto the pressuremeans; a valve mechanism I concomprising a valve opening one conduit bya movement in one direction andthe other conduit by a movement in theopposite di-' valve, of a fluid actuated mechanism con-' trolling theposition of the eccentric comprising fluid pressure means throwing theeccentric under fluid pressure in both directions two conduits leadingfrom the means; a controlling valve mechanism having a controlling valveseat to which the conduits are ported and a port leading to the engine;and a sliding throttle valve having ports adapted to open said conduitsalternately andto open the port to the engine with the opening of eitherconduit, the opening of the port to the engine following the open ing ofa port to a conduit.

8. In a fluid actuated engine, the combination with a cylinder, apiston, an engine valve, a crank, a shaft driven by the crank,

connections between the crank and piston,

an eccentric mounted on the shaft, and connections between the eccentricand engine Valve, of a fluid actuated mechanism cons trolling theposition of the eccentric comprising fluid pressure means throwing theeccentric under fluid pressure in both directions; two conduits leadingfrom the means; a controlling valve mechanism having a controlling valveseat to which the conduits are ported and a port leading to the engine;and a sliding throttle valve having ports adapted to open said conduitsalternately and to open the port to the engine following the opening ofeither conduit, said valve having means exhausting one of the conduitsas the other conduit is opened.

In testimony whereof I have hereunto set my hand.

CLARENCE B. WESTON. I

trolling the conduits, said valve mechanism

